Rotary valve for internal-combustion engines



March 4 y 1927 Filed Feb. n.

1925 2 Sheets-Shee- 1 Nimh d 1927. x 1,619,226

T. D. WERBITZKY ROTARY VALVE FOR T'NTERNAL COMBUSTION ENGNES SIM/vea uTo@ operating to reduce the Patented Mar. 1,1927.

ITED STATES I THEOIHILUS D. WIERBIIZKY, 0F CLEVELAND, OHIO.

ROTARY FOB INTERNAL-COMBUSTION ENGINES.

Application tiled February 9, 1925. Serial No. 7,966.

This invention relates to new andA useful improvementsin -rotary valvesfor internal combustion, engines.

More specifically operating nder, that during the operation of theengine, coolingand scavenging airv is passed'through the vaive duringthe-,secu ond and third cycles (compression and expansion strokes) ofoperation, wherebyj to expel the excess gases temperature 0f the valve.y As will hereinafter appear, the coolin and scavenging air which ispassed throug the valve is thereafter led -to the-carburetor. Obviously,during its passage through the heated valve, the temperature of theairis raised and it is led to 'the car viftor in; such heated conditionas adapts it tc more ready va rization.

he object of the' invention therefore is the provision of rotary valvemechanisms and assembly which is economical from a standpoint of'construction and assembly, and which is etlicient in the accomplishmentof the purposes as above set forth.

Other o jects of the invention made apparent inthe followingspecificationwhen read in connectionwitli the accempauying` drawings`forming a. part thereof. ,f t v In said drawings: f- Fif. 1 is a partialvertical seetiontaken through an -nternal combustion engine equippedwith myv invention.

Fig. 2 is a sim lar view taken through a side ofthe engine.

Fig. 3 is a pers positlon of the va ve during the first cycle ofoperation.

Fig. 4 is a similar viewshowing the plosition of the valve at' the endof the first cycle and the beginning ot the second.

Fi 5 is a similar View of the valve durin t c second cycle.`

1l"ig. 6 is a similar view. of the valve at the end of the second cycleand the beginning of the third cycle.

Fig. 7 is a similar view of the valve durin the third cycle.

ig. 8 is a similar view of the valve at the end of the third cycle andat the beginning of the fourth cycle.

the invention relates Vto the provision of.4 a rotary valve providedwith portsso arranged with respect to co therefrom and also 4 radiatorby the will. be

ctive view s howingthe Fi 9 is a similar view of the valve during tiefourth cycle.

Fig. l0 is a similar view of the valve at the end of the fourth cycleand at the beginning of the first cycle, and

Fig. 1l is a cross-section taken through the valve casin and showing thelocation of the intake an exhaust ports, and the air outlet and-inlet. Y

v`,Now referring 'specifically to the drawin in which similar referencecharacters in icate like parts throughout the several views,A indicatesthe cylinder of an internal combustion engine, and 1 indicates my rotaryvalve mounted above the cylinder A., within a valve casing 2. The easing2 is provided with au air inlet 3, having a dared opening to trap theair and conduct it into the pipe 3, as will be clearly understood,

and an outlet pipe 4 leads from a provided the casing 2, to the caruretor 4:. The customary water jackets 5 surround the valve zcing, andare connected to the ipe 6. As illustrated in Figs. 2 and 11, eair inlet3 leads toan exhaust port 7 in the valve casing, and an air inlet leadsto the intake valve port 2.

The va ve 1 may be rotated by properly synchronized devices connected tothe mo' tor. I have here illustrated the valve as equipped-.with a shaft9 extending through the casinTI and carrying a beveled gear 9 at its eninmesh with a cc-operatin beveled gear 10 `carried b the u per and of arotatable shaft v10. T e sha t 10 extends through suitable bearingbrackets supported 'by the motor and is provided with a gear 10 at itslower end in mesh with a co-oper-l atin gear 11 secured to the crankshaft 11 -of t e engine.

.ets shown in Fi s. 2 and 11, the numeral 12 indicates the e uust pipeof the en e, which leads into the valve casing, and 1 and 2 show thecylinder port 13, leading into the valve casing.

M rotary valve 1 is of course a true cylinder aving closed ends, andadapted to t within the casing 2. The valve is provided with peripheralports describing arcs of the circle defined by the wall of the valve,such ports being clearly illustrated in Figs. 3 to 10 inclusive. Theintake port for the valve is indicated by the numeral 14," the cylinder-valve port by the numeral 15 and exhaust ton, and 18 the connecting rodfor the piston. It is to he notcd that the valve ports 14, 15 and 19 areeach positioned in dierent vertical planes and in spaced relation aroundthe valve l, the ports 14 and 19 each describing 45 degree arcs of thecircular va ve uand the ort 15 describing'a 90 degree arc o said circ e.

The valve 1 is timed to rotate in clockwise direction at one-half crankshaft speed, ninety d rees at each cycle. In the view shown in ig. 3,the approximate position of the valve 1, during the first cycle ofoperation, is shown. During this valve port 15 is partial] closed, butstill in communication with cy inder port 13, and valve intake port 14:1s in communication with intake manifold 16, permitting the gas and airmixture to pass from the carburetor through the intake manifold 16 andinto and through the valve 1 and into the cylinder A.

Fig. 4 shows the position of the valve at the end of the first cycle andat the beginning of the second cycle, ports 14, l5 and 19 all beinclosed.

Fig. 5 s ows the approximate position of the valve in the casing duringthe scc ond cycle, during which port 15 comes communication with outletport Q', and exhaust valve port -19 registers with air in` 1ct 7, allotherports being closed against the walls of the casing 2. i

Fig. 6 shows the position of the valve at the end of the second cycleand at the l|cginning of the third cycle. In this position cylindervalve Jort is wide open and in registration with air outlet 2. All otherports are closed against the walls of the casing Q.

Fig. 7 shows the osition of the valve durin the third cyc e. In thisposit-ion cylint er valve port 15 is partially closed but still in somecommunication with air out let 2. Intake valve port 14 is incommunication with air inlet 8.

During the operations above described currents of air pass into thefunnel-shaped inlet 3, through ports 7 and 8, into and through the valve1, driving out any excess gases which may have remained in the valveduring the first cycle, and materially reducing the temperature of thevalve. The current of air forced into the valve chamber propel' by theengine fan and withdrawn from said chamber by the suction of the carhuretor, passes out through cylinder valve ort 15 and outlet 2', intoand through out et pipe 4 and to the carlmretor, reaching the latter asheated air.

Fig. 8 shows the position of the valve 1 fat the end of the third cycleund at the beginning of the fourth cycle, all ports being closed againstthe wall of the casing.

Fi 9 shows the position of the valve during tie fourth cycle, duringwhich cylinder cycle cylinder A into' valve' port 15 comes intocommunication with cy index'y port 13, and exhaust valve port 19 comesinto communication with exhaust port 12, permitting the burned gases toescape from the cylinder A into and through the valve chamber proper,and into the exhaust 12. All other ports are closed.

Fig. 10 shows the osition of the valve at the end of the fourt cycle andat the beginning of the first cycle. In this position cylinder valveport 15 is wide open and in communication with cylinder port 3.

other ports are closed against the walls of the casin From 51e foregoingit willA be observed that the ports 14,15 and 19 in the valve 1 are soarranged, with respect to thema-operating ports 13', in the cylinderhead, and the ports 7, 8 and 2'., in the valve casin ,t and in res ectto the timed rotation of t c valve bo y, that the various cycles areautomatic and certain. In the varying positions of the valve l, thecharge is taken thercinto, and delivered to the cylinder for subsequentcompression and explosion.. Thereafter, the upstroke of the piston 1Toccurs while the valve .xhaustport 19 is in registration with theexhaust' pipe 12, purginfr the cylinder and valveof the exhausts.`urther movenient of the valve 1, and While valve port 15 is partiallyin communication with cylinder port 13, causes valve intake port. 14 toregister with intake tti, permitting the as cous mixture from the intakemanifol to pass into the valve '1, and through said valve into thecombustion chamlier of the cylinder A, through the port 13. Undercontinued rotation of the valve 1, that is, during the second and thirdcycles, ports 19 and 14 come in registration successively with ports 7and 8 respectively, and port 15 comes in communication with port 2',causing a blast of air to ass through the air inlet pi; 3 into andtiirough the valve and throuvh the pipe 4 into the carburetor, coolingand tak- 1n with it any production remaining in the va ve 1.

.While I have shown and described one cylinder and valve structure, itis to be un# derstood that, in actual practice, there will he at leasttwo cylinders, and probably more. While one cylinder is firing andexhausting another cylinder is intalring and compress ing, therebyinducing a flow 0f cooling and' scavenging air through the section ofthe valve affecting the cylinder whichis exhausting. In other words,lthe intaking cylinder produces the suction in the carburetor necessaryto dran' the cooling and scavseid cylinder, an air inlet leading intotime casing, an exhaust rt leading from the casing, a. mixture in etleading into the casing from the carburetor, and an airoutlet l leadingfrom the casing be the carbureter, a

rotary valve mounted in the casing, and

ports in the valve so positioned that, undervwhereby to oool and seavpass into the air Inlet through the valve and l0 through the air outletto the carbureter,

the valve. whereof I In testimon THEOP

